There is very high input impedance in the buffer that will reflect to the primary if without any resistor from input (before cap) to ground. Maybe it can pick noises easier. But you can also define the input impedance of the buffer with just a resistor in the pot's place.

There is very high input impedance in the buffer that will reflect to the primary if without any resistor from input (before cap) to ground. Maybe it can pick noises easier. But you can also define the input impedance of the buffer with just a resistor in the pot's place.

I'm gathering the parts to get this project started. I got this awesome Radiodyne chassis to build it into (attached). It even has a spring suspension platform for the tubes. Perfect! I'm going to build both the follower and gain version into the same chassis, because I have the room, and it's not that much more work to do both at the same time.

A few questions though:
For the follower version:

What does FT-3 mean on the input cap?

What wattage resistors for 180R, 470R, and for the 5K is that 20W?

For the gain version:

I’m going to source everything from Mouser or Digikey. What easy to find resistor types do you recommend in place of the 5W and 2W Kiwame?